I can't make a news system

Hello, look my code

News_model:

PHP Code:

<?php
class News_model extends CI_Model {

        public function __construct()
        {
                $this->load->database();
        }
}
CREATE TABLE news (
        id int(11) NOT NULL AUTO_INCREMENT,
        title varchar(128) NOT NULL,
        slug varchar(128) NOT NULL,
        text text NOT NULL,
        PRIMARY KEY (id),
        KEY slug (slug)
);
public function get_news($slug = FALSE)
{
        if ($slug === FALSE)
        {
                $query = $this->db->get('news');
                return $query->result_array();
        }

        $query = $this->db->get_where('news', array('slug' => $slug));
        return $query->row_array();
} 


News Controller:

PHP Code:

<?php
class News extends CI_Controller {

        public function __construct()
        {
                parent::__construct();
                $this->load->model('news_model');
                $this->load->helper('url_helper');
        }

        public function index()
{
        $data['news'] = $this->news_model->get_news();
        $data['title'] = 'News archive';

        $this->load->view('templates/header', $data);
        $this->load->view('news/index', $data);
        $this->load->view('templates/footer');
}

public function view($slug = NULL)
{
        $data['news_item'] = $this->news_model->get_news($slug);

        if (empty($data['news_item']))
        {
                show_404();
        }

        $data['title'] = $data['news_item']['title'];

        $this->load->view('templates/header', $data);
        $this->load->view('news/view', $data);
        $this->load->view('templates/footer');
}
} 


My page index.php return:
http://prntscr.com/gxnoht